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/*
 * Copyright 2019 Content Management AG
 * All rights reserved.
 *
 * author: Max Kellermann <mk@cm4all.com>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the
 * distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
 * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "time/ISO8601.hxx"

#include <gtest/gtest.h>

static constexpr struct {
	const char *s;
	time_t t;
	std::chrono::system_clock::duration d;
} parse_tests[] = {
	/* full ISO8601 */
	{ "1970-01-01T00:00:00Z", 0, std::chrono::seconds(1) },
	{ "1970-01-01T00:00:01Z", 1, std::chrono::seconds(1) },
	{ "2019-02-04T16:46:41Z", 1549298801, std::chrono::seconds(1) },
	{ "2018-12-31T23:59:59Z", 1546300799, std::chrono::seconds(1) },
	{ "2019-01-01T00:00:00Z", 1546300800, std::chrono::seconds(1) },

	/* only date */
	{ "1970-01-01", 0, std::chrono::hours(24) },
	{ "2019-02-04", 1549238400, std::chrono::hours(24) },
	{ "2018-12-31", 1546214400, std::chrono::hours(24) },
	{ "2019-01-01", 1546300800, std::chrono::hours(24) },

	/* date with time zone */
	{ "2019-02-04Z", 1549238400, std::chrono::hours(24) },

	/* without time zone */
	{ "2019-02-04T16:46:41", 1549298801, std::chrono::seconds(1) },

	/* without seconds */
	{ "2019-02-04T16:46", 1549298760, std::chrono::minutes(1) },
	{ "2019-02-04T16:46Z", 1549298760, std::chrono::minutes(1) },

	/* without minutes */
	{ "2019-02-04T16", 1549296000, std::chrono::hours(1) },
	{ "2019-02-04T16Z", 1549296000, std::chrono::hours(1) },

	/* with time zone */
	{ "2019-02-04T16:46:41+02", 1549291601, std::chrono::seconds(1) },
	{ "2019-02-04T16:46:41+0200", 1549291601, std::chrono::seconds(1) },
	{ "2019-02-04T16:46:41+02:00", 1549291601, std::chrono::seconds(1) },
	{ "2019-02-04T16:46:41-0200", 1549306001, std::chrono::seconds(1) },

	/* without field separators */
	{ "19700101T000000Z", 0, std::chrono::seconds(1) },
	{ "19700101T000001Z", 1, std::chrono::seconds(1) },
	{ "20190204T164641Z", 1549298801, std::chrono::seconds(1) },
	{ "19700101", 0, std::chrono::hours(24) },
	{ "20190204", 1549238400, std::chrono::hours(24) },
	{ "20190204T1646", 1549298760, std::chrono::minutes(1) },
	{ "20190204T16", 1549296000, std::chrono::hours(1) },
};

TEST(ISO8601, Parse)
{
	for (const auto &i : parse_tests) {
		const auto result = ParseISO8601(i.s);
		EXPECT_EQ(std::chrono::system_clock::to_time_t(result.first), i.t);
		EXPECT_EQ(result.second, i.d);
	}
}